Byssinosis

CSIRO ScienceImage 10736 Manually decontaminating cotton before processing at an Indian spinning mill

Byssinosis, also known as "brown lung disease" or "cotton worker's lung", is a type of occupational lung disease caused by exposure to cotton dust in inadequately ventilated working environments. This condition is most commonly found among workers in the textile industry, particularly those involved with processing raw cotton. Byssinosis can lead to chronic lung problems and is characterized by chest tightness, coughing, wheezing, and shortness of breath, particularly at the beginning of the workweek.

Causes and Risk Factors

The primary cause of byssinosis is the inhalation of cotton dust, which contains a variety of biological and non-biological components that can induce inflammation in the lungs. Workers in the textile industry who are involved in the spinning, weaving, and processing of cotton are at the highest risk. The risk of developing byssinosis increases with the duration and intensity of exposure to cotton dust.

Symptoms

Symptoms of byssinosis can vary from mild to severe and typically develop after prolonged exposure to cotton dust. Early symptoms include:

• Tightness in the chest
• Coughing
• Wheezing
• Shortness of breath

These symptoms often worsen at the beginning of the workweek and may improve as the week progresses or during periods away from the work environment. Chronic exposure can lead to more severe respiratory problems and impair lung function.

Diagnosis

Diagnosis of byssinosis involves a detailed medical history, focusing on occupational exposure to cotton dust, and a physical examination. Pulmonary function tests may be conducted to assess the extent of lung impairment. In some cases, a chest X-ray or CT scan may be used to rule out other conditions.

Treatment and Prevention

There is no cure for byssinosis, but its progression can be managed with treatment. Treatment options include:

• Avoiding further exposure to cotton dust
• Using respiratory protective equipment
• Medications to relieve respiratory symptoms, such as bronchodilators

Preventive measures are crucial in the workplace and include improving ventilation, using dust control systems, and providing workers with appropriate protective equipment.

Prognosis

The prognosis for individuals with byssinosis varies. Avoiding or minimizing exposure to cotton dust can halt the progression of the disease and may lead to an improvement in symptoms. However, continued exposure can result in chronic respiratory problems and a significant decline in lung function.

Epidemiology

Byssinosis is most prevalent in countries with large textile industries, where workers may be exposed to cotton dust without adequate protective measures. The incidence of byssinosis has declined in regions where occupational health standards have improved ventilation and reduced exposure to cotton dust.